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</style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr /><td align="left" valign="top" width="32"><img align="left" border="0" height="32" src="images/rb-logo.png" width="32" /></td><td width="1">&#160;&#160;</td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a>&#160;&#183; <a href="classes.html"><font color="#004faf">All Classes</font></a>&#160;&#183; <a href="modules.html"><font color="#004faf">Modules</font></a></td></table><h1 align="center">QSound Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1><p>The QSound class provides access to the platform audio
facilities. <a href="#details">More...</a></p>

<p>Inherits <a href="qobject.html">QObject</a>.</p><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qsound.html#QSound">__init__</a></b> (<i>self</i>, QString&#160;<i>filename</i>, QObject&#160;<i>parent</i>&#160;=&#160;None)</li><li><div class="fn" />QString <b><a href="qsound.html#fileName">fileName</a></b> (<i>self</i>)</li><li><div class="fn" />bool <b><a href="qsound.html#isFinished">isFinished</a></b> (<i>self</i>)</li><li><div class="fn" />int <b><a href="qsound.html#loops">loops</a></b> (<i>self</i>)</li><li><div class="fn" />int <b><a href="qsound.html#loopsRemaining">loopsRemaining</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qsound.html#play-2">play</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qsound.html#setLoops">setLoops</a></b> (<i>self</i>, int)</li><li><div class="fn" /><b><a href="qsound.html#stop">stop</a></b> (<i>self</i>)</li></ul><h3>Static Methods</h3><ul><li><div class="fn" />bool <b><a href="qsound.html#isAvailable">isAvailable</a></b> ()</li><li><div class="fn" /><b><a href="qsound.html#play">play</a></b> (QString&#160;<i>filename</i>)</li></ul><a name="details" /><hr /><h2>Detailed Description</h2><p>The QSound class provides access to the platform audio
facilities.</p>
<p>Qt provides the most commonly required audio operation in GUI
applications: asynchronously playing a sound file. This is most
easily accomplished using the static <a href="qsound.html#play">play</a>() function:</p>
<pre class="cpp">
 <span class="type">QSound</span><span class="operator">.</span><a href="qsound.html#play">play</a>(<span class="string">"mysounds/bells.wav"</span>);
</pre>
<p>Alternatively, create a QSound object from the sound file first
and then call the <a href="qsound.html#play">play</a>() slot:</p>
<pre class="cpp">
 <span class="type">QSound</span> bells(<span class="string">"mysounds/bells.wav"</span>);
 bells<span class="operator">.</span><a href="qsound.html#play">play</a>();
</pre>
<p>Once created a QSound object can be queried for its <a href="qsound.html#fileName">fileName</a>() and total number of <a href="qsound.html#loops">loops</a>() (i.e. the number of times the sound
will play). The number of repetitions can be altered using the
<a href="qsound.html#setLoops">setLoops</a>() function. While
playing the sound, the <a href="qsound.html#loopsRemaining">loopsRemaining</a>() function returns
the remaining number of repetitions. Use the <a href="qsound.html#isFinished">isFinished</a>() function to determine
whether the sound has finished playing.</p>
<p>Sounds played using a QSound object may use more memory than the
static <a href="qsound.html#play">play</a>() function, but it may
also play more immediately (depending on the underlying platform
audio facilities). Use the static <a href="qsound.html#isAvailable">isAvailable</a>() function to determine
whether sound facilities exist on the platform. Which facilities
that are actually used varies:</p>
<table class="generic">
<thead>
<tr class="qt-style">
<th>Platform</th>
<th>Audio Facility</th>
</tr>
</thead>
<tr class="odd" valign="top">
<td>Microsoft Windows</td>
<td>The underlying multimedia system is used; only WAVE format
sound files are supported.</td>
</tr>
<tr class="even" valign="top">
<td>X11</td>
<td>The <a href="ftp://ftp.x.org/contrib/audio/nas/">Network Audio
System</a> is used if available, otherwise all operations work
silently. NAS supports WAVE and AU files.</td>
</tr>
<tr class="odd" valign="top">
<td>Mac OS X</td>
<td>NSSound is used. All formats that NSSound supports, including
QuickTime formats, are supported by Qt for Mac OS X.</td>
</tr>
<tr class="even" valign="top">
<td>Qt for Embedded Linux</td>
<td>A built-in mixing sound server is used, accessing
<tt>/dev/dsp</tt> directly. Only the WAVE format is supported.</td>
</tr>
<tr class="odd" valign="top">
<td>Symbian</td>
<td>CMdaAudioPlayerUtility is used. All formats that Symbian OS or
devices support are supported also by Qt.</td>
</tr>
</table>
<p>Note that QSound does not support <a href="resources.html">resources</a>. This might be fixed in a future Qt
version.</p>
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QSound" />QSound.__init__ (<i>self</i>, QString&#160;<i>filename</i>, <a href="qobject.html">QObject</a>&#160;<i>parent</i>&#160;=&#160;None)</h3><p>The <i>parent</i> argument, if not None, causes <i>self</i> to be owned by Qt instead of PyQt.</p><p>Constructs a <a href="qsound.html">QSound</a> object from the
file specified by the given <i>filename</i> and with the given
<i>parent</i>.</p>
<p>This may use more memory than the static <a href="qsound.html#play">play</a>() function, but it may also play more
immediately (depending on the underlying platform audio
facilities).</p>
<p><b>See also</b> <a href="qsound.html#play">play</a>().</p>


<h3 class="fn"><a name="fileName" />QString QSound.fileName (<i>self</i>)</h3><p>Returns the filename associated with this <a href="qsound.html">QSound</a> object.</p>
<p><b>See also</b> <a href="qsound.html#QSound">QSound</a>().</p>


<h3 class="fn"><a name="isAvailable" />bool QSound.isAvailable ()</h3><p>Returns true if sound facilities exist on the platform;
otherwise returns false.</p>
<p>If no sound is available, all <a href="qsound.html">QSound</a>
operations work silently and quickly. An application may choose
either to notify the user if sound is crucial to the application or
to operate silently without bothering the user.</p>
<p>Note: On Windows this always returns true because some sound
card drivers do not implement a way to find out whether it is
available or not.</p>


<h3 class="fn"><a name="isFinished" />bool QSound.isFinished (<i>self</i>)</h3><p>Returns true if the sound has finished playing; otherwise
returns false.</p>
<p><b>Warning:</b> On Windows this function always returns true for
unlooped sounds.</p>


<h3 class="fn"><a name="loops" />int QSound.loops (<i>self</i>)</h3><p>Returns the number of times the sound will play.</p>
<p><b>See also</b> <a href="qsound.html#loopsRemaining">loopsRemaining</a>() and <a href="qsound.html#setLoops">setLoops</a>().</p>


<h3 class="fn"><a name="loopsRemaining" />int QSound.loopsRemaining (<i>self</i>)</h3><p>Returns the remaining number of times the sound will loop (this
value decreases each time the sound is played).</p>
<p><b>See also</b> <a href="qsound.html#loops">loops</a>() and
<a href="qsound.html#isFinished">isFinished</a>().</p>


<h3 class="fn"><a name="play" />QSound.play (QString&#160;<i>filename</i>)</h3><p>Plays the sound stored in the file specified by the given
<i>filename</i>.</p>
<p><b>See also</b> <a href="qsound.html#stop">stop</a>(), <a href="qsound.html#loopsRemaining">loopsRemaining</a>(), and <a href="qsound.html#isFinished">isFinished</a>().</p>


<h3 class="fn"><a name="play-2" />QSound.play (<i>self</i>)</h3><p>This method is also a Qt slot with the C++ signature <tt>void play()</tt>.</p><p>This is an overloaded function.</p>
<p>Starts playing the sound specified by this <a href="qsound.html">QSound</a> object.</p>
<p>The function returns immediately. Depending on the platform
audio facilities, other sounds may stop or be mixed with the new
sound. The sound can be played again at any time, possibly mixing
or replacing previous plays of the sound.</p>
<p><b>See also</b> <a href="qsound.html#fileName">fileName</a>().</p>


<h3 class="fn"><a name="setLoops" />QSound.setLoops (<i>self</i>, int)</h3><p>Sets the sound to repeat the given <i>number</i> of times when
it is played.</p>
<p>Note that passing the value -1 will cause the sound to loop
indefinitely.</p>
<p><b>See also</b> <a href="qsound.html#loops">loops</a>().</p>


<h3 class="fn"><a name="stop" />QSound.stop (<i>self</i>)</h3><p>This method is also a Qt slot with the C++ signature <tt>void stop()</tt>.</p><p>Stops the sound playing.</p>
<p>Note that on Windows the current loop will finish if a sound is
played in a loop.</p>
<p><b>See also</b> <a href="qsound.html#play">play</a>().</p>
<address><hr /><div align="center"><table border="0" cellspacing="0" width="100%"><tr class="address"><td align="left" width="25%">PyQt&#160;4.9.1 for X11</td><td align="center" width="50%">Copyright &#169; <a href="http://www.riverbankcomputing.com">Riverbank&#160;Computing&#160;Ltd</a> and <a href="http://www.qtsoftware.com">Nokia</a> 2011</td><td align="right" width="25%">Qt&#160;4.8.0</td></tr></table></div></address></body></html>